A Proposed In Vitro Methodology for Assessing the Accuracy of Three-Dimensionally Printed Dental Models and the Impact of Storage on Dimensional Stability
Open Access
- 28 June 2021
- journal article
- research article
- Published by MDPI AG in Applied Sciences
- Vol. 11 (13), 5994
- https://doi.org/10.3390/app11135994
Abstract
The objective of this study was to propose a standardised methodology for assessing the accuracy of three-dimensional printed (3DP) full-arch dental models and the impact of storage using two printing technologies. A reference model (RM) comprising seven spheres was 3D-printed using digital light processing (MAX UV, MAX) and stereolithography (Form 2, F2) five times per printer. The diameter of the spheres (n = 35) represented the dimensional trueness (DT), while twenty-one vectors (n = 105) extending between the sphere centres represented the full-arch trueness (FT). Samples were measured at two (T1) and six (T2) weeks using a commercial profilometer to assess their dimensional stability. Significant (p < 0.05) contraction in DT occurred at T1 and T2 with a medium deviation of 108 µm and 99 µm for MAX, and 117 µm and 118 µm for F2, respectively. No significant (p > 0.05) deviations were detected for FT. The detected median deviations were evenly distributed across the arch for MAX at p < 0.05). The proposed methodology was able to assess the accuracy of 3DP. Storage significantly impacted the full-arch accuracy of the models up to 6 weeks post-printing.Keywords
This publication has 35 references indexed in Scilit:
- Production tolerance of additive manufactured polymeric objects for clinical applicationsDental Materials, 2016
- Advancements in CAD/CAM technology: Options for practical implementationJournal of Prosthodontic Research, 2016
- 3D printing in dentistryBritish Dental Journal, 2015
- 3D printing with polymers: Challenges among expanding options and opportunitiesDental Materials, 2015
- Trends in Computer-Aided Manufacturing in Prosthodontics: A Review of the Available StreamsInternational Journal of Dentistry, 2014
- Accuracy and reproducibility of dental replica models reconstructed by different rapid prototyping techniquesAmerican Journal of Orthodontics and Dentofacial Orthopedics, 2014
- Marginal adaptation of ceramic crowns: A systematic reviewThe Journal of Prosthetic Dentistry, 2013
- A new method for the computer-aided evaluation of three-dimensional changes in gypsum materialsDental Materials, 2003
- The estimation of cement film thickness by an in vivo techniqueBritish Dental Journal, 1971